Improvement in tire-upsetting machines



HABLOW S. -VINTON, OF BERRIEN SPRINGS, MICHIGAN.

IMPROVEMENT IN TIRE=UPSETTING MACHINES. l

Speeitication forming part of Lztters Patent No. 16LS44, dated April 6, 1875; application tiled November 1'7, 1874.

To all whom t may concern:

Be it known that I, HARLow S. VIN'roN, ot Berrien Springs, in the county of Berrien and State of hilichigan, have invented an Improvement in Tire-Shrinkers, of which the following is a specification:

The nature of this invention consists in the peculiar construction of a tire-shrinker ot' that class wherein a movable clamp is forced toward the stationary clamp by a screw tapped through a nut embedded in the stationary clamp, and engaged with the movable one by two collars. lt more particularly consists in the combination, with the screw, of a doubleacting pawl-lever and: ratchet, by means of which great power can be exerted through the screw upon the tire.

Figure l is a perspective view. Fig. 2 is a longitudinal vertical section at a* x in Fig. l. Fig. 3 is a cross-section ot' the screw at y y, showing the pawl lever in side elevation.

In the drawing, A represents a bed-plate, on one end of which is secured a stationary clampblock, B, having a rib, a, longitudinally raised on its upper surface, against which rib the tire is clamped b v a serrated cam, b, pivoted to said block at the other side of the tire. C is a movable clamp-block sliding in ways on the bed-plate, but is otherwise like the block B, having the rib and cam for clamping the tire. D is a screw journaled through a pendent lug, c, under the block (l, with a collar, d, at each side of said lug. Its threaded end is tapped through a nut, E, placed between two lugs, e e, pendent from the stationary block. On the outer end of the screw there is a handwheel, F, by which it may be rapidly rotated when but little power is required; lout to eX- ert great upsetting power, a pawl-lever, Gr, is sleeved on the shank otA the screw, having pivoted to itsinner face a reversible pawl, H, which engages with a ratchet, I, keyed on the screw to rotate the latter in either direction. With a lever ot' moderate length geared in this way to a screw of tine pitch the blacksmith can easily' upset the heaviest tire in use.

NVhat I claim as my invention, and desire to secure by Letters Patent, is-

The combination, with the bed-plate A, ot'

-the stationary clamp-block B and movable clamp-block O, each having a rib, a, and serrated cam b, the screw D provided with the lugs d d, wheel F, pawl-lever G, reversible pawl H, and ratchet I, the lug c on the block C and nut E placed between the lugs e e on the block B, all constructed and arranged as and for the purpose set forth.

HARLOW S. VINTON.

Witnesses:

GEORGE H. MURDooK, C. F. HowE. 

